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https://issues.apache.org/jira/browse/CASSANDRA-9761?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14738473#comment-14738473
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Sylvain Lebresne commented on CASSANDRA-9761:
---------------------------------------------

bq.  Was it intentional to skip 2.2 with this fix, or just an oversight?

It's totally an oversight, I myself though I had done it on 2.2.

Seems the CI tests are still ongoing, but once it's done and if there is new 
failures, +1.

> Delay auth setup until peers are upgraded
> -----------------------------------------
>
>                 Key: CASSANDRA-9761
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9761
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Sam Tunnicliffe
>            Assignee: Sylvain Lebresne
>             Fix For: 3.0.0 rc1, 2.2.2
>
>
> The built in auth classes {{CassandraRoleManager}} and 
> {{CassandraAuthorizer}} both attempt to do some setup and data conversion 
> when a node is upgraded to version 2.2 or higher. At the moment, each node 
> attempts the operations with the expectation that this will fail until enough 
> of the cluster has been upgraded for it to succeed (i.e. enough nodes have 
> the latest schema with the requisite new tables). These expected failures are 
> largely harmless, but they are annoying because they cause the receiving node 
> (the non-upgraded node) to close the connection with the upgraded node, which 
> then has to be restablished. Although this is the normal behaviour on schema 
> disagreement (see CASSANDRA-9136 for further discussion), it may be possible 
> to avoid in this specific circumstance. Given that we expect the operations 
> to fail until enough nodes are upgraded, we could defer them until we're sure 
> they can succeed by checking the messaging service version of peers. 
> Right now these are a one shot thing, each node only makes one attempt at the 
> conversion (until it is restarted). Without investigating further, I don't 
> know if we'd need to add in retries in case it takes a little time for each 
> peer's MS version to be updated as they're upgraded. The setup & conversion 
> operations are idempotent, so there shouldn't be a great issue if several 
> nodes  attempt them at the same time anyway.



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